The US Food and Drug Administration’s external experts on 21 April backed the agency’s view that future approvals of phosphatidylinositol 3-kinase (PI3K) inhibitors for hematological malignancies should be based on randomized, rather than single-arm, studies.
The vote followed the assurance of Oncology Center of Excellence director Richard Pazdur that the agency would exercise flexibility around the need for a randomized study if a new PI3K inhibitor comes along that shows a clean safety profile in early clinical development